干旱区生态环境知识资源中心(Arid): Reducing plant-derived ethylene concentrations increases the resistance of temperate grassland to drought

Arid

DOI	10.1016/j.scitotenv.2022.157408
	Reducing plant-derived ethylene concentrations increases the resistance of temperate grassland to drought
	Gu, Xinyun; Smaill, Simeon J.; Wang, Bo; Liu, Zhaoying; Xu, Xingliang; Hao, Yanbin; Kardol, Paul; Zhou, Xiaoqi
通讯作者	Zhou, XQ
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	846
英文摘要	Model predictions indicate that extreme drought events will occur more frequently by the end of this century, with major implications for terrestrial ecosystem functions such as plant productivity and soil respiration. Previous studies have shown that drought-induced ethylene produced by plants is a key factor affecting plant growth and development, but the impact of drought-induced ethylene on ecosystem functions in natural settings has not yet been tested. Here, we reduced the amount of plant-derived ethylene concentrations by adding the ethylene inhibitor aminoethoxyvinylglycine (AVG), and investigated in situ plant productivity, soil respiration and ethylene concentra-tions for two years in a semi-arid temperate grassland in Inner Mongolia, China. Drought significantly reduced plant productivity and soil respiration, but the application of AVG reduced ethylene concentrations and significantly in-creased aboveground plant productivity and soil respiration, effectively enhancing resistance to drought. The reason for this could be that AVG application increased the activity of 1-aminocyclopropane-1-carboxylic acid (ACC) deami-nase and abundance of the acdS gene (the key gene for ACC deaminase), facilitating reduced ACC concentrations in the plant tissue and reduced in planta ethylene synthesis. In addition, there was a significant correlation between soil ACC deaminase activity and plant productivity. Given the global distribution of arid and semi-arid areas, and the expected increases in the frequency and intensity of drought stress, this is a significant concern. These results provide novel ev-idence of the impact of drought-induced plant ethylene production on ecosystem functions in semi-arid temperate grassland ecosystems.
英文关键词	Drought Ethylene inhibitor Plant aboveground productivity Soil respiration ACC deaminase activity Grassland ecosystem
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000862703000005
WOS关键词	SOIL RESPIRATION ; N CONTENTS ; ORGANIC C ; ECOSYSTEM ; CLIMATE ; RESILIENCE ; PRODUCTIVITY ; BIODIVERSITY ; IMPACTS ; PROTEIN
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394396
推荐引用方式 GB/T 7714	Gu, Xinyun,Smaill, Simeon J.,Wang, Bo,et al. Reducing plant-derived ethylene concentrations increases the resistance of temperate grassland to drought[J],2022,846.
APA	Gu, Xinyun.,Smaill, Simeon J..,Wang, Bo.,Liu, Zhaoying.,Xu, Xingliang.,...&Zhou, Xiaoqi.(2022).Reducing plant-derived ethylene concentrations increases the resistance of temperate grassland to drought.SCIENCE OF THE TOTAL ENVIRONMENT,846.
MLA	Gu, Xinyun,et al."Reducing plant-derived ethylene concentrations increases the resistance of temperate grassland to drought".SCIENCE OF THE TOTAL ENVIRONMENT 846(2022).